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  <title>Returns the data associated with an object</title>

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</div><hr /><div id="splobjectstorage.offsetget" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">SplObjectStorage::offsetGet</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.3.0)</p><p class="refpurpose"><span class="refname">SplObjectStorage::offsetGet</span> &mdash; <span class="dc-title">Returns the data associated with an <span class="type"><a href="language.types.object.html" class="type object">object</a></span></span></p>

 </div>

 <div class="refsect1 description" id="refsect1-splobjectstorage.offsetget-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <span class="methodname"><strong>SplObjectStorage::offsetGet</strong></span>
    ( <span class="methodparam"><span class="type">object</span> <code class="parameter">$object</code></span>
   )</div>

  <p class="para rdfs-comment">
   Returns the data associated with an <span class="type"><a href="language.types.object.html" class="type object">object</a></span> in the storage.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-splobjectstorage.offsetget-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">object</code></em></dt>

     <dd>

      <p class="para">
       The <span class="type"><a href="language.types.object.html" class="type object">object</a></span> to look for.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-splobjectstorage.offsetget-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   The data previously associated with the <span class="type"><a href="language.types.object.html" class="type object">object</a></span> in the storage.
  </p>
 </div>

 
 <div class="refsect1 errors" id="refsect1-splobjectstorage.offsetget-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
   Throws <a href="class.unexpectedvalueexception.html" class="classname">UnexpectedValueException</a> when <em><code class="parameter">object</code></em> could not be found.
  </p>
 </div>

 
 <div class="refsect1 examples" id="refsect1-splobjectstorage.offsetget-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-3727">
    <p><strong>Example #1 <span class="function"><strong>SplObjectStorage::offsetGet()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$s&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">SplObjectStorage</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$o1&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">StdClass</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$o2&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">StdClass</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$s</span><span style="color: #007700">[</span><span style="color: #0000BB">$o1</span><span style="color: #007700">]&nbsp;=&nbsp;</span><span style="color: #DD0000">"hello"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$s</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">attach</span><span style="color: #007700">(</span><span style="color: #0000BB">$o2</span><span style="color: #007700">);<br /><br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">offsetGet</span><span style="color: #007700">(</span><span style="color: #0000BB">$o1</span><span style="color: #007700">));&nbsp;</span><span style="color: #FF8000">//&nbsp;Similar&nbsp;to&nbsp;$s[$o1]<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$s</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">offsetGet</span><span style="color: #007700">(</span><span style="color: #0000BB">$o2</span><span style="color: #007700">));&nbsp;</span><span style="color: #FF8000">//&nbsp;Similar&nbsp;to&nbsp;$s[$o2]<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
string(5) &quot;hello&quot;
NULL
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-splobjectstorage.offsetget-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="splobjectstorage.offsetset.html" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetSet()</a> - Associates data to an object in the storage</span></li>
    <li class="member"><span class="methodname"><a href="splobjectstorage.offsetexists.html" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetExists()</a> - Checks whether an object exists in the storage</span></li>
    <li class="member"><span class="methodname"><a href="splobjectstorage.offsetunset.html" class="methodname" rel="rdfs-seeAlso">SplObjectStorage::offsetUnset()</a> - Removes an object from the storage</span></li>
   </ul>
  </p>
 </div>


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